JP2000116773A - Needle tube protecting cap for injector - Google Patents

Abstract

PROBLEM TO BE SOLVED: To evade danger to injure a fingertip by means of a needle tip even when the needle tip is deviated to the outer side of an opening part by means of missing the mark by pinching a tab by means of fingers of one hand in a state where the fingers are sufficiently separated from the opening part when a used needle is stored in a needle tube protecting cap. SOLUTION: An outer edge part 2a swelled in a little large diameter is arranged in the outer periphery of the opening part in the needle tube protecting cap 1 and a planar tab 3 is arranged in the outer edge part 2a by extension. Hinge parts 3a and 3b are formed at two positions on the board surface of the tab 3 and a tapered boss part 4 with a little small diameter in the tip is arranged on the inner board surface of the tip of the tab 3. Slits 6 are piercingly and circumferentially arranged on the board surface of the tab 3 in the base part peripheral edge of the boss part 4 and a part between the base peripheral edge of the boss part 4 and the planar surface of the tab 3 is connected by a rib 5 at the desired place of the slits 6. When the used needle is stored in the needle tube protecting cap 1, the tab 3 is pinched by the fingers of one hand in a state where the fingers are sufficiently separated from the opening part 2b.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a needle stick prevention device for a medical syringe.

[0002]

2. Description of the Related Art Conventionally, various measures have been taken in hospitals and the like to prevent nosocomial infection. In one example, the entire syringe is disposable. Alternatively, the injection needle attached to the tip of the syringe body is disposable. It is considered that it is desirable that the disposable injection needle after use of the syringe be re-stored in the needle tube protection cap from the viewpoint of handling safety up to the subsequent disposal work. However, when holding the syringe body with one hand and storing the needle at the tip of the syringe body in the needle tube protection cap held with the other hand, if there is a discrepancy, the finger holding the needle tube protection cap with the needle point is used. May stab. These needlestick injuries put healthcare workers at risk for transmission of AIDS and hepatitis. Therefore, injection needles with protectors, syringes with safety devices, needle tube protection caps with collars, injection needle removal containers, and the like have been proposed.

[0003]

SUMMARY OF THE INVENTION According to the present invention, a needle stick accident is prevented when a disposable injection needle after use of a syringe is stored in a needle tube protection cap, and thereafter, the injection needle does not leak from the needle tube protection cap. An object of the present invention is to provide a needle puncture accident preventive device that can be safely disposed of at a low cost with a simple structure.

[0004]

The present invention has the following arrangement to achieve the above object. The needle tube protection cap of the syringe according to the first aspect of the present invention has a plate-like tab extending from an outer peripheral portion of an outer periphery of the opening, and a boss portion is formed on a plate surface of the tab. A hinge is formed at a predetermined position, and after the used injection needle is accommodated in the needle tube protection cap, the tab is bent at the hinge, and the opening of the needle tube protection cap or the rear end hole of the injection needle is formed. A needle tube protection cap for a syringe, wherein a boss is inserted into the needle tube protection cap so that the injection needle and the like do not leak out of the needle tube protection cap.

According to a second aspect of the present invention, there is provided a needle tube protection cap for a syringe according to the first aspect, wherein a slit is formed in a plate surface of a tab at a peripheral edge of a base portion of the boss. At the required point of the slit, the base periphery of the boss and the plate surface of the tab are connected by a rib,
The boss portion is provided so as to be able to swing appropriately with respect to the plate surface of the tab.

[0006]

1 to 4 show a first embodiment of a needle tube protection cap for a syringe according to the present invention. As shown in the figure,
The needle tube protection cap 1 is provided as a cylindrical resin molded product or the like having a front end closed and having a hole for accommodating the injection needle 7 at the axis from the opening 2b, and has an opening at the outer periphery of the small diameter portion 7a of the injection needle 7. The inner surface near the portion 2b is engaged and attached. Further, an outer edge 2a swelling to a slightly larger diameter is provided on the outer periphery of the opening of the needle tube protection cap 1, and a tab-shaped tab 3 is provided extending to the outer edge 2a. Hinge portions 3a and 3b are formed at two positions on the plate surface of the tab.
A boss portion 4 having a slightly tapered tip is provided on the inner plate surface at the tip.

Further, a slit 6 is formed in the plate surface of the tab 3 at the base peripheral edge of the boss 4 in a circumferential shape.
At the required location, the base peripheral edge of the boss 4 is connected to the plate surface of the tab 3 by a rib 5 (in the embodiment, two ribs are provided in a direction perpendicular to the longitudinal direction of the tab). ), The boss portion 4 is provided so as to be able to swing as appropriate with respect to the plate surface of the tab 3.

The boss 4 seals the rear end hole 7b of the injection needle 7 shown in FIG. That is, after the used injection needle 7 is accommodated in the cylindrical portion 2 of the needle tube protection cap 1, the tab 3
Are bent in a substantially U-shape at the hinge portions 3a and 3b, and the rear end hole 7b of the injection needle is swung while the boss portion 4 swings so that the injection needle 7 and the like do not leak out of the needle tube protection cap 1. Insert into. FIG. 4 shows a state where the rear end hole 7b is sealed. Incidentally, if the boss portion is not allowed to swing, it is difficult to make the boss portion relate to the rear end hole of the needle tube protection cap unless the boss portion is elastic.

When the used injection needle 7 is accommodated in the needle tube protection cap 1, the tab 3 is pinched with one finger so that the finger is sufficiently isolated from the opening 2b. Even if the needle tip is shifted to the outside of the opening 2b, the risk of damaging the finger tip with the needle tip is avoided.

Incidentally, the needle tube protection cap 1 of the first embodiment described above.
In order to be accommodated in a state where the rear end of the small-diameter portion 7a of the injection needle protrudes from the rear end of the cylindrical portion, two hinge portions are provided on the tab 3 so that the tab becomes substantially U-shaped. Although it is configured to bend, if the entirety of the injection needle 7 is provided so as to fit within the cylindrical portion of the needle tube protection cap, the hinge portion of the tab may be at one place, and the boss at the tip of the tab may be used to form the inside of the opening. It is also possible to configure so that the hole is sealed. Also, an engaging portion (not shown) utilizing elastic deformation is formed between the rear end hole of the injection needle or the inner hole of the opening of the needle tube protection cap and the outer periphery of the boss portion. It is also possible to configure so as to securely maintain the sealed state.

Next, FIGS. 5 and 6 show a second embodiment of a needle tube protection cap for a syringe according to the present invention. As shown in the figure, the front end of the needle tube protection cap 8 is closed, and the opening 9b is opened.
A cylindrical resin molded product having a hole for accommodating the injection needle in the center of the injection needle is provided, and an opening 9 is formed in the outer periphery of the small diameter portion of the injection needle.
The inner surface near b is engaged and attached. An outer edge 9a swelling to a slightly larger diameter is provided on the outer periphery of the opening of the needle tube protection cap 8, and a plate-like tab 10 is provided extending to the outer edge 9a. Hinge portions 10a and 10b are formed at two positions on the surface, and after the used injection needle is accommodated in the cylindrical portion of the needle tube protection cap 8, the tab 10 is substantially U-shaped at the hinge portion. The boss 11a is formed on the inner plate surface at the tip of the bent tab so that the injection needle and the like do not leak out from the inside of the needle tube protection cap.
The boss 11a seals the rear end hole 7b of the injection needle 7 shown in FIG.

That is, the basic configuration of the second embodiment is the same as that of the first embodiment, except that a guide portion 11a such as a V-groove is formed at the top of the boss 11 provided on the tab 10. Then, the guide portion 11a of the boss portion 11 is inserted so that the injection needle is safely accommodated in the cylindrical portion 9 of the needle tube protection cap 8.
Is configured to guide the injection needle 7. Note that, similarly to the first embodiment, it is possible to configure so that the opening of the needle tube protection cap is sealed with the boss by using the hinge portion as one location.

[0013]

[Function] When the used injection needle is housed in the needle tube protection cap, the tab is picked with one finger so that the finger is sufficiently separated from the opening, so that the hand becomes crazy and the needle tip is opened. The risk of damaging the fingertip with the needle tip is avoided even if it is shifted to the outside of the part. The description is omitted because it is not the gist of the present invention.
A rotation stopper (not shown) is formed between the inner surface of the needle tube protection cap and the outer periphery of the small diameter portion 7a of the injection needle by a combination of ribs and grooves.
Can be removed from the syringe body while rotating the needle tube protection cap with respect to the syringe body.
After the injection needle is accommodated in the needle tube protection cap, the tab is bent at the hinge portion, and the boss portion is inserted so that the injection needle and the like do not leak out of the needle tube protection cap. The opening of the needle or the rear end of the injection needle is sealed, so that it is not pierced by a needle point contaminated with blood or the like, thereby preventing infections such as AIDS and hepatitis. In addition, the subsequent disposal is easy and safe.

[0014]

The construction and operation of the needle tube protective cap of the syringe of the present invention are as described above, and the infection such as AIDS and hepatitis can be prevented without puncturing with the needle tip contaminated with blood or the like. Further, since the structure is simple, it can be provided at an extremely low price. Further, since the needle tip is housed and disposed in a sealed state, it is highly effective in preventing accidents not only by medical staff but also by disposal workers.

[Brief description of the drawings]

FIG. 1 is a perspective view showing a needle tube protection cap of a syringe that is Embodiment 1 of the present invention.

FIG. 2 is a sectional view of a main part around a boss.

FIG. 3 is a perspective view showing a state in which a syringe needle is housed in a needle tube protection cap of the syringe.

FIG. 4 accommodates a syringe needle in a needle tube protection cap of the syringe;
It is the perspective view which showed the state which sealed the rear end.

FIG. 5 is a perspective view showing a needle tube protection cap of the syringe that is Embodiment 2 of the present invention.

FIG. 6 is a perspective view showing a state in which an injection needle is accommodated in a needle tube protection cap of the syringe.

FIG. 7 is a perspective view showing a dangerous state in which an injection needle is to be accommodated in a conventional needle tube protection cap.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Needle tube protection cap 2 Tubular part 2a Outer edge part 2b Opening 3 Tab 3a Hinge part 3b Hinge part 4 Boss part 5 Rib 6 Slit 7 Injection needle 7a Small diameter part 7b Rear end hole 8 Needle tube protective cap 9 Tubular part 9a Outer edge 9b Opening 10 Tab 10a Hinge 10b Hinge 11 Boss 11a Guide 12 Rib 13 Slit 14 Syringe body 15 Needle tube protection cap

Claims (2)

[Claims] 1. A needle tube protection cap for a syringe accommodating an injection needle through an opening, wherein the needle tube protection cap of the syringe has a plate-like tab extending to an outer edge of an outer periphery of the opening. A boss portion is formed on the plate surface, and a hinge portion is formed at a predetermined position on the plate surface. After the used injection needle is accommodated in the needle tube protection cap, the tab is bent at the hinge portion and A needle tube protection cap for a syringe, wherein a boss is inserted into an opening of the needle tube protection cap or a rear end hole of the injection needle so that the injection needle and the like do not leak out of the needle tube protection cap. . 2. A slit is formed in the plate surface of the tab at the base edge of the boss portion, and a rib is connected between the base edge of the boss portion and the plate surface of the tab at a required portion of the slit. The needle tube protection cap for a syringe according to claim 1, wherein the portion is provided so as to be able to swing with respect to the plate surface of the tab.